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Installation and Operating Instructions
Pentek Models ST-BC-4, ST-BC-5, ST-BC-8, ST-BC-10, ST-BC-12, ST-BC-15, ST-BC-16, ST-BC-20
General
These quality engineered, high-flow filters in 304 Stainless
Steel are widely used and recommended for “Central
Filtration” systems such as required for apartment buildings,
schools, clubs, camps, institutions, farms, restaurants and
cafeterias where outside building installations require flow
rates from 28 - 125 gpm (1,580 - 7,500 gph), when installed
with PENTEK dirt/rust cartridges (Models S1 or P25) for cold
water installations up to 100° F (38° C).
When used with PENTEK taste/odor Model C1 cartridges,
flow rates will range from 12 - 60 gpm (720 - 3,600 gph).
Specifications
All 304 Stainless Steel filters are shipped without
cartridges installed, featuring a single clamp for fast and
easy removal of the cover.
The internal center rod features a tightening hand knob to
facilitate fast cartridge change-over and sealing. Rated flow
capacities are based on sediment removal with
25-Micron Rated filter cartridges.
Model
ST-BC-4
ST-BC-5
ST-BC-8
ST-BC-10
ST-BC-12
ST-BC-15
ST-BC-16
ST-BC-20
* Above Rated Capacity based on sediment removal with a 25-Micron filter cartridge and 1 psig initial clean pressure drop. For taste/odor removal, rated flow capacities based on effective contact time are: ST-BC-4, 12gpm; ST-BC-5, 15 gpm; ST-BC-8, 24 gpm; ST-BC-10, 30 gpm; ST-BC-12, 36 gpm; ST-BC-15, 45 gpm; ST-BC-16, 48 gpm;
ST-BC-20, 60 gpm.
** Number of cartridges refers to the number of 9
Example: 4X2 means that 9
Rated
Capacity*
28 gpm
35 gpm
56 gpm
70 gpm
84 gpm
103 gpm
110 gpm
125 gpm
3
/4
” cartriges are configured four around and two high. Standard housing gasket is Buna-N.
Maximun
0perating Pressure
125 psig - 300° F
125 psig - 300° F
125 psig - 300° F
125 psig - 300° F
125 psig - 300° F
125 psig - 300° F
125 psig - 300° F
125 psig - 300° F
3
/4
” or 10” cartridges which are configured around the housing times the number of cartridges that may be stacked.
Dimensions
Height
1
19
/4"
1
19
/4"
29"
29"
3
39
/4"
3
39
/4"
3
49
/4"
3
49
/4"
OA Dia.
10"
10"
10"
10"
10"
10"
10"
10"
No.**
4X1
5X1
4X2
5X2
4X3
5X3
4X4
5X4
Cartridges
Dia.
3"
1
2
/2"
3"
1
2
/2"
3"
1
2
/2"
3"
1
2
/2"
(Maximum)
Length
3
/4" or 10"
9
3
9
/4" or 10"
3
9
/4" or 10"
3
9
/4" or 10"
3
9
/4" or 10"
3
9
/4" or 10"
3
9
/4" or 10"
3
9
/4" or 10"
Pipe Size
(NPT)
1
1
/2"
1
1
/2"
2"
2"
2"
2"
2"
2"
Shipping
Weight
20
20
30
30
40
40
50
50
(Lbs)
IMPORTANT NOTICE — Must Be Read Before Installation
WARNING: The housing MUST BE protected against freezing. Failure to do so may result in cracking of the housing and leakage.
WARNING: If pressure may exceed 125 psi at anytime, a pressure regulator MUST BE used.
WARNING: After opening to install cartridges, make sure to replace cover according to instructions, or it will leak under pressure.
WARNING: DO NOT use air to test housing for leaks.
WARNING: DO NOT use housing for air filtration.
CONNECTING THE FILTER
The filter should be mounted in an elevated position permitting
easy draining. The drain plugs located on the filter wall should
be removed, and piping with drain valves installed as in Fig. 1 or 3.
Identify inlet and outlet connections (inlet is always higher
than the outlet).
TAKE CARE NOT TO HOOK THE FILTER UP BACKWARDS
to install a shut-off valve on each side of the filter.
. Place filter as shown and connect piping, being sure
NOTE:
When filter is installed next to the water meter or pressure
tank, the main shut-off valve serves as pressure-side (filter
inlet) shut-off.
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TO INSTALL AND CHANGE CARTRIDGES
Inlet
21/4"
21/4"
63/4"
63/4"
Clean Drain
Dirty Drain
Outlet
Inlet
Center Post
Hold Down Knob
Hold Down Plate
Clean Drain
Dirty Drain
Outlet
Center Post
Hold Down Knob
Hold Down Plate
Cartridge (in place)Gasket
Belly-Band
Cover Clamp
Cover
ST-BC-5, ST- B C-10, ST-BC-15, ST- B C-20
ST-BC-4, ST- B C-8, ST- B C-12, ST- B C-16
When changing catridges, it is good practice to flush out the filter housing to remove accumulated dirt and sediment. Use the
following procedure to dismantle the filter:
Shut-off inlet and outlet valves. Slowly open drain valves to
release pressure, then open the vent to allow filter housing to
drain. After the filter has drained completely, remove clamp nut
and belly-band cover clamp. Lift off cover. Unscrew hold down
knob. Lift off hold down plate, exposing cartridges. Remove the
top cartridges and discard. Cartridge posts will now be visible.
Inspect housing to be certain that all water has drained. Lift
each cartridge post and discard the remaining. Clean all parts
thoroughly. Check condition of cover gasket, and replace if
needed.
REASSEMBLING FILTER/STARTING OPERATION
Place each of the cartridge posts into the openings provided at
the bottom of the housing. With the cartridge posts in position,
place new cartridges on them. Install by gently sliding them
down the cartridge posts.
IN PLACE.
Place hold down plate over center post, guiding
seal plates into the center of each cartridge. Tighten down hold
down knob.
DO NOT OVERTIGHTEN. Assemble cover using
instructions.
1. Head must be properly aligned on beveled gasket before
applying clamp.
2. Be sure head cover is not tilted or cocked on gasket.
3. Upon applying clamp, strike sides of clamp with mallet as the
DO NOT JAM, FORCE OR DROP
bolt is being tightened, making sure flange of head and body
are being grabbed by the retainers of clamp.
4. Continue to tighten bolt striking clamp until retainers of
clamp have secured flanges of both cover and body. Clamp
is properly tightened with approx.1/2" gap between each end
of clamp.
5. Filter is ready for service.
6. Make absolutely sure if there is a valve on the discharge
or outlet, that it is open.
7. Slowly open valve on inlet, allowing cartridges and gasket
to position.
8. Relieve internal pressure by opening vent plug in head cover.
9. Start pump.
10. Your filter is now operational.
Upon putting filter into service and it is found to be leaking at the
clamp, DO NOT CONTINUE OR ATEMPT TO TIGHTEN BOLTS OF
CLAMP UNDER PRESSURE. Relieve pressure partially and drain
water before removing clamp. Re-install starting at Step 1.
Fig. 1
Valve Valve
To Drain
Filter Housing
INOUT
Shut Off Valve
or Faucet
Wall
Fig. 2
Valve Valve
Shut Off
Valve
or
Faucet
To Drain
Filter Housing
IN
OUT
Wall
Mfg. by Pentair Water Treatment ©2003 142208 Rev B 11/03
Toll Free Technical Support: 800-861-8758 • Technical Support: 920-451-9301 • supportspecialist@pentekfiltration.com
Phone: 920-457-9435 • international@pentekfiltration.com • International Fax: 920-457-2417
502 Indiana Avenue • Sheboygan, WI 53081
www.pentekfiltration.com
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